Question

Question #4c78b

Answer 1

I found: `4xx10^-5km^2`

Explanation:

We can use scientific notation and write that:
length`=5xx10^(-3)km`
width`=8xx10^(-3)km`
Area will be `A="base"xx"height"`
or:
`A=5xx10^(-3)xx8xx10^(-3)=(5xx8)10^((-3)+(-3))=`
using the property of exponents.
So:
`=40xx10^(-6)=4xx10^-5km^2`

or: `0.00004km^2`